How do I drill Gelcoat without cracks
#1
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How do I drill Gelcoat without cracks
Going to install 2 strap brackets for Bimini with #10 screws. Best I can figure final drill size is 5/32. What technique for drilling without cracks.
thanks
thanks
#2
Easiest methods I’ve found are don’t use an extremely sharp bit, go in reverse to burn through the first layers, lightly counter sink the hole before you run the screw in. If you don’t have a counter sink or are lazy to change your bit you can also use your phillips screw tip as a small counter sink haha
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#3
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Easiest methods I’ve found are don’t use an extremely sharp bit, go in reverse to burn through the first layers, lightly counter sink the hole before you run the screw in. If you don’t have a counter sink or are lazy to change your bit you can also use your phillips screw tip as a small counter sink haha
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Baja 252 Islander
Baja 252 Islander
#4
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Platinum Member
Easiest methods I’ve found are don’t use an extremely sharp bit, go in reverse to burn through the first layers, lightly counter sink the hole before you run the screw in. If you don’t have a counter sink or are lazy to change your bit you can also use your phillips screw tip as a small counter sink haha
And use a very light touch !
#5
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Do not run the screw into the glass without an appropriate counter sink. Best done with a stone so as to not create any rough / sharp edges. Just want a smooth bevel, and do not over tighten the screw and pull the gell from the glass substrate.
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Keith Atlanta (08-26-2021)
#6
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Gold Member
Easiest methods I’ve found are don’t use an extremely sharp bit, go in reverse to burn through the first layers, lightly counter sink the hole before you run the screw in. If you don’t have a counter sink or are lazy to change your bit you can also use your phillips screw tip as a small counter sink haha
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#7
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i always put down masking tape on the fiberglass before drilling, reduces cracks/chunks.
remove after drilled.
remove after drilled.
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Dave3fl (08-26-2021)
#10
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Masking tape and then counter sink